The Colorado Rockies have the highest OPS by a team in a month, with an OPS of 1.333 in October 1995.

	TEAM	OPS	MONTH	G	W%	W	L	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG
1	Rockies	1.333	October 1995	1	1.000	1	0	35	10	15	5	2	2	10	4	1	1	0	2	42	30	9	0	2	3	1	.429	.476	.857
2	Red Sox	1.291	October 2006	1	1.000	1	0	21	9	7	1	0	3	9	5	1	4	0	0	27	17	4	0	0	0	1	.333	.481	.810
3	Orioles	1.277	October 1977	1	1.000	1	0	39	8	14	2	0	6	8	3	0	6	1	2	42	34	8	0	0	1	0	.359	.405	.872
4	Astros	1.263	October 1995	1	1.000	1	0	41	8	16	3	1	4	7	6	0	6	0	0	48	33	8	0	1	1	2	.390	.458	.805
5	Yankees	1.231	March 2025	3	1.000	3	0	102	36	34	3	0	15	35	16	3	21	0	1	124	82	18	0	3	1	1	.333	.427	.804
6	Tigers	1.216	October 2000	1	1.000	1	0	38	12	19	3	0	1	12	5	0	5	0	1	46	25	4	3	0	0	2	.500	.558	.658
7	Cubs	1.203	March 2003	1	1.000	1	0	40	15	16	3	1	2	15	12	0	6	1	1	53	27	6	0	1	0	2	.400	.528	.675
8	Cubs	1.186	October 1916	1	1.000	1	0	31	6	11	4	0	3	5	3	0	2	1		35	24	7	1				.355	.412	.774
9	Orioles	1.179	March 2023	1	1.000	1	0	38	10	15	4	0	2	9	9	1	8	5	0	49	25	6	1	0	0	1	.395	.521	.658
10	Indians	1.166	October 2000	1	1.000	1	0	33	11	12	2	0	4	10	1	1	7	0	0	38	26	6	1	2	0	1	.364	.378	.788
11	Rangers	1.161	October 1995	1	1.000	1	0	32	9	13	4	1	1	9	4	1	5	1	1	39	22	6	1	1	1	0	.406	.474	.688
12	Reds	1.141	October 1967	1	1.000	1	0	30	10	12	3	0	2	9	3	0	5	0	0	35	21	5	1	1	0	3	.400	.441	.700
13	Indians	1.128	October 1995	1	1.000	1	0	43	17	19	0	1	2	16	5	0	7	3	0	48	27	3	0	0	0	0	.442	.500	.628
14	Phillies	1.119	March 2014	1	1.000	1	0	44	14	17	3	0	3	13	6	0	8	3	0	50	29	6	0	0	0	0	.386	.460	.659
15	Blue Jays	1.118	October 2021	3	1.000	3	0	109	28	38	8	0	11	28	6	2	13	1	0	117	79	19	0	0	0	1	.349	.393	.725
16	Athletics	1.110	October 1925	2	.500	1	1	77	18	34	8	1	1	18	8	1	2	0		88	47	10	2				.442	.500	.610
17	Athletics	1.110	October 2006	1	1.000	1	0	41	11	17	5	0	1	10	8	1	3	3	0	53	25	6	1	2	0	3	.415	.500	.610
18	Mariners	1.107	March 1998	1	.000	0	1	36	9	12	2	0	4	9	2	1	7	0	0	40	26	6	1	0	0	1	.333	.385	.722
19	White Sox	1.101	March 2008	1	.000	0	1	39	8	13	5	0	3	8	5	0	11	1	0	44	27	8	0	0	1	0	.333	.409	.692
20	Rays	1.100	October 2023	1	1.000	1	0	43	12	16	4	0	3	11	3	1	9	2	0	47	29	7	0	0	0	0	.372	.426	.674
21	Yankees	1.097	October 2012	3	1.000	3	0	121	28	44	9	0	9	28	16	1	19	2	1	140	80	18	0	2	1	3	.364	.436	.661
22	Pirates	1.092	October 1967	1	1.000	1	0	40	10	16	2	1	2	10	3	0	8	2	0	44	26	5	1	0	1	0	.400	.442	.650
23	Marlins	1.091	March 1998	1	1.000	1	0	37	11	14	2	1	2	11	4	1	9	1	1	43	24	5	0	1	0	0	.378	.442	.649
24	Tigers	1.089	October 1927	2	1.000	2	0	71	16	28	9	1	2	15	8	0	7	0		83	45	12	4				.394	.456	.634
25	Cardinals	1.086	March 2003	1	1.000	1	0	35	11	12	3	1	2	11	6	0	5	1	0	43	23	6	1	1	1	1	.343	.429	.657